Magpul MBUS 3 Front Sight, Flat Dark Earth

The Magpul MBUS 3 Front Sight: Refined Backup Sight Excellence

Magpul's MBUS 3 represents the thoughtful evolution of their proven backup sight line. This front sight distills the best features of the original MBUS and MBUS Pro into a compact, reliable package that serves as an essential insurance policy for any AR-platform rifle.

Compact Design

The MBUS 3 Front Sight is engineered for minimal footprint without sacrificing functionality. When folded, it stands just 0.44 inches high and measures 1.15 inches at its widest point. The sight weighs a mere 25 grams with hardware—light enough that it adds negligible weight to your rifle while remaining robust enough for field use.

Deployment and Operation

Spring-Loaded Ambidextrous Push-Button: The sight deploys smoothly via an ambidextrous push-button mechanism, allowing rapid deployment from either side of the rifle. Once deployed, it locks into standard AR-height position, ready for use.

Tool-Less Elevation Adjustment: Unlike sights requiring specialized tools, the MBUS 3 features intuitive elevation adjustments you can make in the field:

• 1 MOA per click (1.131"/100 yards) with a 14.5-inch sight radius
• 0.7 MOA per click (0.820"/100 yards) with a 20-inch sight radius

The dual-width enhanced front post provides a versatile sight picture for both precision and rapid-fire applications.

Construction and Durability

Constructed from Magpul's impact-resistant polymer, the MBUS 3 delivers the aesthetics and handling characteristics of the premium MBUS Pro while maintaining exceptional durability and lightweight performance. This material choice ensures the sight withstands the rigors of training and field use without unnecessary weight penalty.

Mounting Considerations

The MBUS 3 Front Sight mounts to Picatinny rails on your rifle's forend. Mount it to a railed handguard on the same plane as your receiver rail for proper function. Note: This sight is not compatible with MOE Hand Guards or railed gas blocks due to heat considerations.

Made in the USA

Magpul manufactures the MBUS 3 in the United States, supporting domestic production standards and quality control.